3rd Gen FM Transmitter with Micro Rapid Car Charger compatible with the Sandisk Sansa Clip Zip Full FM frequency spectrum is available and is user selectable in 0.1MHz increments from 88.1 to 107.9 MHz. Advanced Digital PLL sound coding maintains stable and high quality sound. Specification: Input Voltage (12-24 vDC), Cable length (50 inches), Transmitter Dimensions (2.25 X 1.25 X .25 inches), Circuit Design (Sandisk Sansa Clip Zip Specific) Car charger includes smart technology circuit architecture to provide precision voltage and resistor regulation specific to the Sandisk Sansa Clip Zip. Protects the internal battery longevity by modulating the charge in a safe and efficient manner. Product is designed to last and is backed by our Gomadic Lifetime Warranty. Buy with confidence! A best-selling product from Gomadic Corp, one of the leaders in consumer electronic accessories.